Core-box cutter



PATENTED F B, 23,1904.-

P. E. THOMES.

GORE BOX CUTTER.

' APPLICATION FILED JULY 20, 1903.

N0 MODEL.

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ed is stationary, and the head revolves upon p UNITED STATES PatentedFebruary 23 1904.

PATENT O FICE.

FRANK E. THOMES, OF PORTLAND, MAINE, AS SIGNOR OF ONE-HALF TO CHARLES F.MANTINE, OFPORTLAND, MAINE.

CORE-BOX CUTTER.

SPECIFICATION forming part of Letters Patent No. 753,178, dated February23, 1904. Application filed July 20, 1903. Serial No. 166,276. (I10model.)

To all whom it may concern:

Be it known that I, FRANK E. Tnonnsa citizen of the United States,residing at Portland, in the county of Cumberland and State of Maine,have invented certain new and useful Improvements in Core-Box Cutters;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to core-box cutters.

It relates particularly to means for mounting the cutter-head relativeto the table, to means for guidingthe core-box on the table, to a newand improved cutter, and to certain details of construction, which willbe hereinafter more particularly described, and pointed out in theclaims. Its object is to produce a simpler and more eflicientmachine forcutting core-boxes.

In the drawings herewith accompanying and making a part of thisapplication, Figure l is a front view of my core-box cutter, partly insection. Fig. 2 is a transverse sectional view, partly in elevation, ofthe cutter-head and the mechanism for adjusting it. Fig. 3 is a plan ofthe table and core-box-guiding mechanism; and Fig. 4 shows verticaltransverse and longitudinal sections, respectively, of the cutterheadand the means for rotating the same.

Same letters refer to like parts.

In said drawings, A represents the frame,

B the table, rigidly mounted thereon, and B a core-box blank. Thecutter-head is mounted on a spur C, projecting from a bracket D. Thespur upon which the cutter-head is mountthe spur, a gear E on the mainshaftF meshing with a gear G on spur C. The head is secured to the gearby locking pins C, taking into holes I) in the hub. The main shaft isdriven in any convenient manner, as by a belt H, working over a pulleyH. The cutterhead is given vertical adjustment by means of a screw I,set in the frame and passing through a shoulder J, projecting from thebracket; A beveled gear K on the end of the screw meshes with a beveledgear'K on the end of a shaft L, which is operated by means of ahand-lever M, the rotation of the screw accompli'shing a verticaladjustment of the cutter-head and operating mechanism. The cutter-headis mounted upon the spur in order that the main driving-shaft may belocated below the table, so as not to interfere with the movement of thecorebox blank upon the table, the table being provided with acomparatively limited slot or opening N, through which the cutter-headand its very short support project. The shaft upon which the outter-headis mounted is so short that it permits of the core-box blank being cutto a complete semicircumference without moving the table relative to thecutter-head shaft.

It has heretofore been customary to guide the core-box blank in variousways; but so far as I am aware it has never been customary to guide thecore-box blank by passing it between vertical antifriction guide rolls.This of course can only be done when the sides of the core-box blank areparallel with the direction of the core in the blank. To adapt myimproved core-box cutter to useblanks of this kind, I employ rolls 0,adjustable horizontally by means of sliding sleeves P, secured to thetable, whereby they can be adjusted to contact with core-boxes ofdifferent sizes. I also provide means for holding the box from ver ticaldisplacement consisting of antifrictionrolls Q, rotatably mounted upon avertica post B, said post being adjustable through said vertical rolls 0and maintained in any given position by means of set-screw S.

The cutterhead-consists of a hub T and removable arm T, adapted toreceive the knives U. The knives are of peculiar configuration and areadapted to remove the material from the box by a slicing or shearingout. To this end they are curved, and the cutting edge is inclined to apoint, as seen at U. This makes a much better out and is less liable tosplit the blanks and is one of the important features of my invention.The belt which drives the cut tor-head shaft is kept under propertension by means of roll V at the end of a weighted lever V.

The advantages of my improved core-box cutter are: It affords bettermeans for guiding the blank, it cuts the core a full semicircle withoutvertical movement of the table or blank one relative to the other, itmakes a more perfect core, it lessens the tendency to split the blank byreason of the slicing orshearing cut of the knives, and the plane inwhich the cutter-head revolves is always at right angles to the table.

Having thus described my invention andits use, I claim- 1., In acore-box cutter, a suitable frame, a

table secured to the frame provided with asaid table and adapted to outwork fed axially over the cutter, vertical guide-rolls one on each sideof and in the plane of the cutter and means for adjusting themhorizontally relative to the table, whereby they can be brought intocontact with the sides of a core-box blank while being fed over thetable.

3. In a core-box cutter, a suitable frame, a table mounted thereon andhaving a slot therein, a rotating cutter-head projecting through saidslot in said table and adapted to out work fed axially over the cutter,posts adapted to have vertical and horizontal adjustment relative tosaid table one on each side of and in the plane of the cutter,horizontal ofisets on said posts and antifriction-rolls mounted on saidoffsets.

In testimony whereof I aflix my signature in presence of two witnessesthis 16th day of July, 1903.

FRANK E. THOMES.

In presence of ELGIN (l VERRILL, MARION RICHARDS.

